Additional services at the very core of DASH, at the very core of its marketing and its purpose in life. I look at them as core services and not additional services. All central to the DASH architectural model.
But the point is that the basic coin is the same as BTC. The idea is you have some services on top that improve on what you can get from trusted third-parties with BTC. These services run on 2,400 servers in a random, trustless fashion - instead of a handful of servers owned by one anoymous dude who can steal your coins.
Forgetting any first-mover advantages or whatever....if this is an improvement over standard BTC then why not use it?